Victorian Era Old Mine Cut Diamond Five Stone RingVictorian era five old mine cut diamond ring. The setting is one of our favorite 19th century forms, silver on gold cutaway open back settings. The ring is approximately 1. 40 carats in total diamond weight, J K color and SI1 I1 clarity. Engish in origin. circa 1865. Size 6. 75, can be resized. Ring paired with a Victorian turquoise and diamond five stone ring.